Plate-punching machine



Jam 26, E923. L459J76 G.LASKER PLATE PUNCHING MACHINE Filed Nov. 8, 19194 Sheets-Sheet 1 June 26, 1923. 1,459,776

4 LASKER PLATE PUNCHING MACHINE Filed Nov. 8, 1919 4 Sheets-Sheat 2 5V/5 f5 5 7 A25 z 10\ o 3 o co 3 o 0 7/ June 26, 5923.

Filed Nov. 8 1919 G.LASKER PLATE PUNCHING MACHINE 4 Sheets-Sheet 3 G.LASKER PLATE PUNCHING MACHINE 1919 4 Sheets-Sheet 41 Filed Nov. 8

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GEORGE LASKER, OF CHICAGO, ILLINOIS.

PLATE-PUNCI-IING MACHINE.

To all whom it may concern:

Be it known that I, GEORGE LASKER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Plate-Punching Machinesor the like, of which the following is a description.

My invention belongs to that general class of devices known as platepunching machines employed for punching rivet or bolt holes in sheetmetal plates used for the making of tanks, boilers, or otherdesiredpurposes. The invention has among its objects the production of a deviceof the kind de scribed, that is simple, convenient, durable, efficientand satisfactory for use wherever found applicable. It has among itsfurther objects the productionof a device of the kind described whichwill accurately punch plates of the desired size, thicknessfland shapein a predetermined manner, without requiring a layout as is customary atthe present time. The machine is adapted to cut or punch the holes in apredetermined manner to correspond with any predetermined regular orirregular design with a minimum of labor and time, regardless of thesize of the work, within the limits of the machine, and to cut the holesdisposed in the form of an arc of any desiredradius or design. Manyother objects and advantages of the construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosure herein made, i

To this endmy invention consists of the novel construction, arrangementand combination of parts herein shown and described and moreparticularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like orcorresponding P I Figure l is a plan view of one form of my device,

Figure 2 is a sectional view taken substantially on line 22 of Figure l,

*Figure 3 is a sectional view taken substantially on line 3+8 of Figure2,

Figure 4 is a sectional view taken substantially on line 44 of Figure 3,

Figure 5 is a plan view of a portion of the maintable and guide barshown in nigure 1, c p

Figure 6 is a sectional view taken sub stantially on line 6-6 of Figurel, and

Figure 7 is a view of the gauge bar 37 and cooperating pawl lookingsubstantially from the point marked wit-h the arrow 7 in Fig. 6.

Figure 8 is a fragmentary section taken substantially on line 88 ofFigure 5;

Figure 9 is a fragmentary section taken substantially on line 9-9 ofFigure 1; and Figures 10, 11, 12, 13, and 14: represent varioustypes ofpunched plates.

Referring to the drawings, 1 and 2. represent suitable punch presses ofthe desired size and type and which may be constructed to eachpunch oneor more holes simultaneously. I have indicated the punch ma chine headswith the numerals 3, but in view of the fact that any desired type ofpunch machine may be employed I have not con sidered it necessary toillustrate the punch presses in detail. The punching machines in thepreferred construction are set or mounted substantially as shown, onopposite sides of what may be termed the guide rail 5, as well as onopposite sides of a line extending transversely of the line of the guiderail. Preferably they are so arranged that the punches are in a commonline, extending at right angles to the guide rail andinparallelalignment with the frames, substantially atan angle of degrees to theguide rail. (See Fig. 1.) This arrange' ment permits a plate, forexample, plate 4 to be fed through the punch machines in a plurality ofdirections, with plenty of clearance. .The guide rail 5 is of thedesired shape,size and material and of the desired length and supportedandsecured in place in the desired manner. In the machine illustrated itis secured in place so that it may be flexed. or adjusted as will behereinafter described. The same is shown mounted on a table consistingof the bed plate 6 carried by legs or frame parts 7, it beingunderstood, however, that the same may be supported inany desiredmanner. The frame parts 7 are shown provided with standards 8, carryingrollers 9 or their equivalents so that the plate may be pushed along thetable with as little friction as possible. These rollers may be of theswivel type, similar to a caster if preferred.

Referring particularly to Figures 1, 5 and 6, the guide rail 5, asshown. is supported by the base plate 6 and maintained againsttransverse movement by the adjustable screw members 10 carried by thebrackets 11. By adjusting the members 10 as de sired, the guide rail maybe maintained in a desired or predetermined position; for eX- ample, itmay be adjusted as indicated by the dotted lines in Figures 5 and 6, thepurpose of this being hereinafter described. The guide rail between itsends or at the center of the machine, however, is preferably notadjustable and. is maintained 1n place by the brackets 11 (see Figure 5)arranged substantially in the line of the punch machines or line aa asindicated in Figure 1. Arranged to travel or slide on the guide bar 5are clamping members 12 and 13 or the equivalent of suitable form,which, in the construction shown, are formed with a slot 14 for thereception of the plate, which may be secured to the clamps by the bolts15 or their equivalents for the purpose. The clamps 12 and 13 are formedwith a portion 16 extending to each side of the guide bar, so that asthe plate is pushed along on the table, being sup ported by the rollers9 or their equivalents, its travel will be directed or guided by the Kguide rail 5. On one side of the table and on the side of the line aaopposite to the punch at that side of the table, I provide a guide rail19 which may be maintained in place on a table similar to that describedfor the guide rail 5, and I also provide a guide rail 20 similarlyarranged on the opposite side of the table, as most clearly shown inFigure 1. These two guide rails may be secured in place by adjustablemembers simi- 7 lar to the members 10 or secured in fixed position bymembers similar to 11, the ad justa-ble arrangement, however, being ordinarily preferred. The length and width of -.1 l1 several tablesobviously depend upon "the capacity of the machine and should besufficient to take care of the largest size plate which it may bedesired to punch. A clamp carriage or frame 28 is preferably arranged soas to be guided by the guide bar 19, the same having clamps 24 forclamping the plate. A frame 25 having clamps 26 is also arranged tocooperate with the guide bar 20. As shown, frame 23 follows the platewhile frame 25 precedes it. Any suitable mechanism may be provided tofeed the plate along the tables. As shown (Figs. 1, 2 and 6) I arrange arack bar 28 and carry the same by the clamps or an equivalent manner soit is connected with the plate. The same is arranged to be driven by apinion 29 in any suitable manner. I have shown pinion 29 driven by apinion 30, suitably connected thereto, which is in turn driven by bevelgear'31, shaft 32, bevel gears 33, shaft 34 and a hand wheel 35. I havenot considered it necessary to show this construction in detail for theframes 23 and 25, as the same maybe similar to the mechanism shown onthe table for bar 5.

To afford a measure of the movement of the plate between each punchingoperation I provide what may be termed a stop or gauge bar 37 arrangedto cooperate with the pawl 38 01 the like carried with the plate (seeFigure 7), the same, in the construction shown, being secured to one ofthe clamps 12. In moving the plate, the hand wheel or the equivalent maybe turned until the pawl 38 engages the next tooth, the hand wheel beingthen ordinarily turned back so that the pawl properly engages with atooth on bar 37. Obviously the number of teeth or length of thesamedetermines each step in the travel of the plate so that by varyingor employing different stop bars 37 the plate may be caused to travel insteps of various lengths, as may be desired. I have shown a plurality ofstop. members 39. (See Figures 1, 5 and 8, as well as Figure 6.) Theseare shown secured in place by brackets 40 carriedby a portion of thetable frame and their purpose is to assistin securing a proper alignmentor setting of the plate when securing the same in the clamps 24. Asshown, springs 41 or their equivalent normally maintain the same out of.operative position, but the same may be raised into position by a'bar 42having a cam member 42'.

Each of the punch presses has the usual base 44 which may be carried onthe base or foundation 45. As shown, the punch presses are slidablymounted on the bases 45 and mechanism is provided for moving them towardor from each other but parallel with the line (1-60. The mechanismprovided moves the punches simultaneously and equal distances from theguide bar 5.

Referring particularly to Figures 3 and 4, bolts 46 normally secure thepunches in operative position on the bases or foundations 45. Eachmachine is provided with an extending part 47 arranged to be engaged bya rod 48. The rods 48 are connected by shaft 49 and bevel gearing 50.One rod 48 may be provided with a hand wheel 51 or arranged to be drivenin an equivalent manner. As the hand wheel is turned, shafts 0r rods 48rotate and move the punch machines together or separate them the desireddistance. hen in the desired positions, they are bolted down by'thebolts 46.

The punches 1 or 2 may be driven in any suitable manner, this dependingsomewhat upon the make and type of the punch, but the driving mechanismis preferably so arranged that the machines will. be driven in unison orsimultaneously and so that the presses may he adjusted. as described. Asillustrated in Figure 1, I provide a driving shaft 58 arranged to drivethe pinions 54 which drive the gears 55 operatively connected with thepunch mechanism, it being understood that idler gears may be providedlili) 26 are if desired. The pinions or gears 5-1 are arranged to slideon the shaft 53,,being keyed or otherwise suitably secured thereon,their movement being controlled by the arms 56 so that as the machinesare: adjusted on their foundations the driving mechanism isautomatically adjusted at the same time. Shaft 53 may be drivenbygearing 57-58 and motor 59, or in an equivalent manner.

The operation of the mechanism may be briefly described as follows:Assuming that it is desired to punch a rectangular plate.

similar to the plate 4; with the row of holes l about the same. Theplated is first se cured in the clamps 24 on the frame 23 and above theguide rail 19. The stops 39 'may be raised to afford a convenientsetting so that the plate is set true, after which the stops aredropped. Frame 23 is then fed along on the guide raillll, starting asinclioated in dotted lines at 4a, the feeding mechanism being similar tothat descr'hed for the guide bar 5. are punched by the press 1, theplate being moved forward in a direction indicatedby the arrow X andtoward the opposite punch. When the first hole punched by No. l punchhas reached the. corresponding punching position under punch No. 2,clamps 12 and 1.3 are adjusted to the plate and the same se- .curelyfastened therein. Clamps 2a are then released and the frame movedbackoutol' the way. The plate is then advanced by means of the operationrof wheel 35 and of the mechanism described, in the direction in dicatedby the arrow Y, and the parallel sides of the plate are. simultaneouslypunched as. indicated in Figure 1. The plate is moved in the directionindicated until the predetermined number of spaces or holes have beenpunchechafter which clamps applied and clamps l2 and 13 released, andthe plate and frame 25 are then moved ii the direction indicated bythearrow Z, in all respects similar to, themovementof the plate when on theguide bar 19 and the holes punched by press 2. l Vhen this movement hasprogressed to the last hole on) this side or edge of the plate, thepunching operation is complete and the plate may then be removed. Itwill be particularly noted that after the plate is first secured to theclamps 24, it istat alltimes secured against independent movement otherthan allowed by the guides 19, 5 and 20, until the punching iscompleted. This description covers the movement of a plate rectangularor square in form punched on four sides with single row of holes. Thismaybe variedby punching two, three or four rows of holes staggered andspaced asrequired by means of a multiple punch in which any punch may bestopped or started by means of a wedge or gag (not necessary to show anddescribe in detail). In other words, the mechanism 1 The holes in oneend predetermined radius or form to guide bar is set.

may be provided with two punches, or more,

so that instead of punching a single row at one time, moreuthan one rowmay be punched, indicated in Figures Band 13, 1n which plates 6 and 66are shown. However,

in varying the punching, thedesired stop or gauge bar 37 would beemployed so that the holes will be punched in a predetermined manner, asmight be desired. It will heparticularly noted that with themachine'described, it is unnecessary to lay the work out on the plate,as having properly set the same in the clamps, the punching mechanismadusted, and provided a suitable gauge bar,

the work will be accurately performed withthe common center, by settingthe plates in the clamps in a desired manner, or the guide bars may becurved to any predetermined radius or form and as the clamping lugs ormembers engage the guide bars at all times the plate in its movementwould follow any which the If it is desired to cut a telescope patternsimilar to that shown in Figure 11, with holes 60 and 61 in the ends and62 and 63 in the sides, the members 10 are set so as to flex or adjustthe guide to form a desired arc. When the guide bar has been properlyset to form any radius re quired or are desired, the movement ofthcplate through the machine being guided by the clamping members 12 and13, with the proper, forward movement ofthe plate and clamps, reproducesthe same arcs on the parallel line of holes to which the guide bar isset, thus permitting the punching of telescope patterns of any radiuswithin the limits of which the tableis constiaicted. In practice it isnecessary in the punching of telescope patterns to increase the lengthof the are on the outer are a suillcient amount to make the internaldiameter. when formed large enough to go over the external diameter whenformed with the following course. In practice this makes it necessary tohave an equal number of spaces on both the large and the small arcs.lVith my improved ma 'chine and method of punching, it is .only

necessary to use as a basis of measurement the" mean diameters of thelarge. and the small ends of all telescope patterns, divide thisdistance into the number of spaces re quired, and attach the desiredstop or gauge bar properly spaced to thetop side of the table top andadjacent the guide bar, in such position that the pawlmay engage withthe ratchet by a forward movement in regular order. The necessaryincrease on the large arc and the decreaseon the small are areautomaticallyproducedif the guide bar is set to conform to the properare required by the diameters of the courses, the width of material andthickness of the materialcollectively taken and the proper gauge barused. The plate may thereafter be sheared to shape. It is not considerednecessary to describe in detail all the possible designs which may beproduced and their uses, .nor is it considered necessary in thisapplication to set forth all the details of the punch presses, theirpunches, single, gang, etc. It may, however, be mentioned that with somework it is necessary to work on arcs of many feet radius which is a verysimple matter when the work can be done as herein set forth withoutrequiring the design to be first laid out on the plate. If the machineguide bars, etc., are set right, every plate will be an exact duplicateof the other without error. If desired, only one guide bar or portion ofthe same may be flexed so that various irregular patterns or designs maybe produced.

Having thus described my invention, it is obvious thatwvariousimmaterial modificm tions may be made in the same without departingfromthe spirit of my invention, hence I do not wish to be understoodlimiting myself to he enact construction, arrangement, combination ofparts or uses mentioned.

IVhat I claim as new by Letters Patent is:

r 1. In mechanism of the kind described and in combination, punchmechanism, and means for guiding andintermittently feeding the work tobe punched to said punch and desire to secure 1 mechanism in apredetermined manner in a plurality of transversely intersectingdirections, the feeding movements automatically moving the work adistance equal to the spacing between punch holes. I

2. In mechanismof the kind described and in combination, punchmechanism, ad-

justable means automatically operative for guiding the work to bepunched to said punch mechanism in a plurality of transverselyintersecting directions, and means for feeding said work to the punch ina predetermined manner.

3. In a mechanism of the kind described and in combination, punchmechanism, means for guiding the work tobe punched to said punchmechanism in a predetermined manner, first in one direction andthen inthe direction transverse thereto, and means intermittently feeding saidwork simultaneously with said guiding, in stepsequal to the spacingbetween the punch holes.

4. In a mechanism of the kind described and in combination, punchmechanism, means for adjustably. guiding the work to be punched to thepunch mechanism first in one direction and'then in a directiontransversely I intersecting said direction, and means for feeding saidwork to the punch in a series of steps of predetermined lengths whileguiding it in said direction.

5. In adeviceof the kind described'and in combination, a pair of punchpresses, plate carrying mechanism, means for guiding the movement of theplate to feed the work to one punch, means for guiding the movement ofthe plate in a changed direction to both punches and means for thenceguiding the movement of the plate in a changed direction to the-secondpunch.

6. In a device of the kind described and in combination, punchmechanism, a work table arranged in operative relation thereto, meansfor clamping said work to said table, means for guiding said work on thetable in a plurality of intersecting directions to said punch mechanismwithout unclamping said workduring its travel in any one direction, andmeans for feeding the work to the punch mechanism in a predeterminedmanner. I

7. In a device of the kind described and in combination, punchmechanism, a work table arranged in operative relation thereto, a seriesof adjustable guide rails mounted on said work table in a series ofmutually transverse directions, means for adjustably setting each guiderail for the entire series of holes to be punched on the line parallelthereto, work clamping means arranged to cooperate with said guiderails, means for moving said clamping mechanisms in cooperation withsaid guides in turn to feed the work to said punch mechanism in saidseries of directions, and means for gauging the feeding to provide apredetermined spacing of the punched holes.

8. In a device of the kind described and in combination a guide rail,means for sup porting and maintaing said guide rail in a predeterminedmanner, punch mechanism arranged at each side of said guide rail withtheir punches substantially in a common line extendingat a right angleto the guiderail,

one punch mechanism arranged on one side of said line and the other onthe other side, a guide ra1l extending to adgacent said first mentionedguide rail at one side thereof and.

on the opposite side of said common line relative the punch at said sideof the rail, another guide rail extending similarly on the opposite sideof said guide rail and on the other side of said common line between thepunches work clamping means for each of said guide rails arranged tocooperate therewith, and means for gauging the movement of said clampingmeans on said guiderail, whereby the holes produced by said punchmechanisms will be spaced in a pre determined manner.

9.- In a deviceof the kind described and in clamping means on said theholes producedby said punch mecna-v combination, an adjustable guiderail, means for supporting and maintaining said guide rail in apredetermined manner, punch" mechanism arranged at each side of saidguide rail at an angle thereto with their punches substantially in acommon lineex tending at a right angleto the guide rail,

one punchmechanism arranged on one side of said line and the OtilGfOIlthe other side, a guide rall extending to ad acent said first mentionedguide rail at one side'thereof and on theopposite side OtSalCl commonline relative the punch at said side of the rail, another guide railextending similarly on the opposite side of said guide rail and on theother side of said common line between the punches, work clamping means.for each of said guide rails arranged to cooperate therewith, means forslidably supporting the work during the movement thereof, and means forgauging; the movement of said guide rail whereby nisms will bespaced ina predetermined 10. In a punch press device of the kind described, apair of punch presses spaced from each other, a work table extendingbatween the presses and beyond at each side thereof, said. table having anextension on' described, a pair of punch presses spaced from each other,a work table extending between the presses and beyond at each sidethereof, said table having an extension on opposite'sides, one extensionat one side of the presses and the other at the opposite side,adjustable guide rails extending between the punches and at each sidethereof,

work clamping mechanism slidably connect-Y ed with said guide rails, andmeans for moving said work clamping means and gauging the movementthereof to move the plate to be punched under the punches in apredetermined manner.

12. In a punch press device of the kind described, a pair of punchpresses spaced from each other, means for adjusting the relativeposition of said presses, a work table extending between the presses andbeyondat each side thereof, said table having an extension on oppositesides one extension at one side of the presses and the other at theopposite side, guide rails extending between i n j "provided with an adustable guide rail exthe punches and at each side thereof, work punchedunder the clamping mechanism slidably connected with said guide rails,and means for moving said. workclamping means and gauging the movementthereof to move the plate to be punched under the punches in a predetenminedmanner. 13. In punch press device of the kind described, a pair ofpunch presses spaced from each other, means for adjusting the relativeposition of said presses, means for driving the presses in't1I1lSOl1,"-l work table extendingibetween the presses and beyond. ateach side thereof, said table having an extension on opposite sides, oneextension at one side of the presses and the other at the oppositeside,-guide rails extending between the punches and at each sidethereof, work clamping mechanism slidably connected with said guiderails, and means for moving said work clamping means and gauging themovement thereof to move the plate to'be punches in a predeterminedmanner.

14. In. a punch press device of the kind described a pair. of punchpresses spaced from each other, means for adjusting the relativeposition of said presses, adjustable means for driving the presses inunison, a work table extending between the presses and beyond at eachside thereof, said table having an extension on opposite sides, one

extension at one side of the presses and the other at the opposite side,adjustable guide rails extending between the punches and at each sidethereof, work clamping mechanism slidably connected with said guiderails, and means for moving said work clamping means and gauging themovement thereof to move the plate to be punched under the punches in apredetermined manner.

l5. Ina punching mechanism of the kind described and in combination, awork table provided with a guide rail extending lengthwise thereof, apunch press arranged at each side of said table with their punches lyingsubstantially in aline at right angles to the table and on oppositesides thereof, adjustable supporting means for said presses,

means for. adjusting the presses relative each other to move the sametoward or from each other, an extension table arranged on each side ofsaid first mentioned table, one extension table arranged at one side ofsaid line connecting the punches, and the other at the other side, aguide rail carried by each of said tables, clamping mechanism arrangedon each guide rail and slidable thereon,

whereby the work may be guided successive ly from one table to theother, and punched at one edge by one punch, and thence at oppositeedges by both punches, and thence at the last edge by the other punch.

16. In apunching mechanism of the kind. described and in combination, awork table tending lengthwise thereof, a punch press arranged at anangle at each side of said table with their punches lying substantiallyin a line at right angles to the table and on opposite 'SlClGS thereof,adpistable supportmg means for said presses, means for adjusting thepresses relative each other to move the same toward or from each other.

an extension table arranged on each side of said first mentioned table,one extension table arranged one side of said line connecting thepunches, and the otherat the other side, a guide rail carried by each ofsaid tables, clamping mechanism arranged on each guide rail and slidablethereon,

' whereby the work may be guided successivel from one table to the otherand Junched at one edge by-one punch, and thence at op-- posite edges byboth punches, and thence at the last edge by the other punch, and meanstable guide rail, means for driving said presses in unison as desired,an extension table arranged oneach side of said first mentioned tableand each provided with a guide rail,

clamping mechanism arranged on each guide rail and slidable thereon,means for sliding said clampingmechanisms and means for gauging thesliding thereof.

18. A method of punching plates consisting in feeding the plate toapunch machine and punching along one edge, thence changing thedirection of travel and simultaneously punching the two opposite edges,and thence again changing the direction of travel and punching the lastedge. r

19. A method of punching plates consisting in feedingthe plate to apunch machine and punching along one edge, thence changing the directionof travel and simultaneously punching the two oppositeedges with outreleasing the plate, and thence again Without releasingthe platechanging the direction ol travel and punching the last edge.

in testimony whereof, I have hereunto s1 gned my name in the presence oftwo sub scribing Witnesses.

GEORGE LASKER.

Witnesses:

ROY lV. HILL, Bnn'rn'a HARTMANN.

